Explanatory Pamphlet for Continent-Ocean Transect B3: Juan De Fuca Spreading Ridge to Montana Thrust Belt
Darrel S. Cowan, 1986. "Explanatory Pamphlet for Continent-Ocean Transect B3: Juan De Fuca Spreading Ridge to Montana Thrust Belt", B-3 Juan de Fuca Spreading Ridge to Montana Thrust Belt, Darrell S. Cowan, Christopher J. Potter, M. T. Brandon, D. M. Fountain, D. W. Hyndman, S. Y. Johnson, B.T.R. Lewis, K. J. McClain, D. A. Swanson, R. C. Speed
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The theme of these explanatory notes is the westward growth of the North American continent in the region transected by the strip maps and cross-sections on the accompanying displays. The focus is on continent-ocean interactions and on the transition from the Precambrian sialic basement of North America to accreted terranes during Mesozoic and Cenozoic time. The first section describes the active plate boundaries along which the Juan de Fuca plate is being created and consumed. Next is a brief review of major tectonic events during which diverse terranes were accreted to the margin of North America.
Figures & Tables
DNAG Transect B-3. Part of GSA's DNAG Continent-Ocean Transect Series, this transect contains all or most of the following: free-air gravity and magnetic anomaly profiles, heat flow measurements, geologic cross section with no vertical exaggeration, multi-channel seismic reflection profiles, tectonic kindred cross section with vertical exaggeration, geologic map, stratigraphic diagram, and an index map. All transects are on a scale of 1:500,000.